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What Is Roofing Felt

History Of Roofing Felt

Types Of Roofing Felt

Installing Roofing Felt

How To Install Roofing Felt

Once you understand what it does, and you know which one you need, you are ready to lay the underlayment for your roof. But, as with so many other projects, the key lies in the prep work. If you take the time to properly prepare the roof, then laying the felt will be easy. On the flipside, if you rush through the initial steps, the felt installation can be compromised by sloppy oversights such as stray nails.

Prep Work

Check the weather. Ideally, the roof should be done when there is a forecast for several days without a lot of rain.

Laying the Felt

The roofing felt should be applied in layers that overlap. Start at the bottom of the roofline and work up so any water that gets through the roofing material will shed down the tar paper and will not go under it.

Some roofing felts are actually glued down. These applications are ideal for flat roofs or protective surfaces under roof-level decks. These thick layers of roofing felt are installed by heating the back of the felt with a butane torch and then carefully applying it to the roof.
 
Installing the roofing felt does take care, but can go very quickly. Taking the time to properly prepare the sheathing will make all the difference in how quickly and easily the felt paper is installed. The actual process of putting down the underlayment will be one of the fastest parts of the entire roofing process.

Tips and Techniques

Check the requirements for the roofing material that will go over the felt. Some materials require heavier felt paper.

Tools and Supplies

A tape measure and chalk line are needed for snapping the guidelines on the roof.

Two or more people are required to help roll out and straighten the paper during the process.

A nail gun can be used to quickly install some nails to the roofing paper won’t slide around.  Follow manufacturers’ instructions when choosing nails.